Loans (Troubled Debts Restructured) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) loan	Mar. 31, 2016 USD ($) loan
Commercial Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	1
Pre-Modification Outstanding Recorded Balance	$ 72	$ 83
Post-Modification Outstanding Recorded Balance	$ 72	$ 83
Consumer [Member] | First Mortgage [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan	1	5
Pre-Modification Outstanding Recorded Balance	$ 65	$ 419
Post-Modification Outstanding Recorded Balance	$ 67	$ 428
Consumer [Member] | Automobile Loan [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan		1
Pre-Modification Outstanding Recorded Balance		$ 4
Post-Modification Outstanding Recorded Balance		$ 7
Consumer [Member] | Boat/RVs [Member]
Financing Receivable, Modifications [Line Items]
No. of Loans | loan		2
Pre-Modification Outstanding Recorded Balance		$ 48
Post-Modification Outstanding Recorded Balance		$ 48